Alert archive / North Dakota / Special Weather Statements in 2020

Special Weather Statement, NWS Grand Forks, ND

August 9, 2020Grand Forks County, North Dakota

NWS Grand Forks, ND issued this special weather statement at Aug 9, 2020, 9:09 AM CDT for Grand Forks County, North Dakota. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 9, 2020, 9:09 AM CDT (14:09 UTC)
Expired: Aug 9, 2020, 10:15 AM CDT
In force: 66 min
Issued by: NWS Grand Forks, ND

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 72 km from the middle of the area, began a volume at 14:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 2.2 hours before the alert went out and 283 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2237 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this special weather statement went out at Aug 9, 6:41 AM CDT, 2 hours 28 minutes earlier.

Area forecast discussion, Aug 9, 6:41 AM CDT, 2 hours 28 minutes before

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</head>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 9, 4:26 AM CDT, 4 hours 43 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
426 AM CDT Sun Aug 9 2020

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-100930-
West Polk-Norman-Clay-Kittson-Roseau-Lake Of The Woods-
West Marshall-East Marshall-North Beltrami-Pennington-Red Lake-
East Polk-North Clearwater-South Beltrami-Mahnomen-
South Clearwater-Hubbard-West Becker-East Becker-Wilkin-
West Otter Tail-East Otter Tail-Wadena-Grant-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-
Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-Richland-
Western Walsh-
426 AM CDT Sun Aug 9 2020

This hazardous weather outlook is for portions of eastern North
Dakota, west central and northwest Minnesota.

.DAY ONE...Today and Tonight

Multiple rounds of thunderstorms will be possible today. The first
round will impact during the early morning hours mainly south of
the I-29/Highway 10 corridor. Hail up to 1 inch and wind gusts to
60 mph will be possible. These storms will move eastward out of
the area by mid-day.

Additional thunderstorms will move in from western North Dakota
during the late morning and into the afternoon as a cold front
moves into the region. Depending on how the morning activity plays
out, there is the possibility of hail up to 1 inch, wind gusts to
75 mph, and even a brief tornado spin up as a complex of
thunderstorms moves across the area during the afternoon and
evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Additional thunderstorm chances will be possible during the middle
to later part of the work week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Special weather statement, Aug 9, 5:31 AM CDT, 3 hours 38 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
531 AM CDT Sun Aug 9 2020

NDZ049-052-053-091130-
Sargent ND-Richland ND-Ransom ND-
531 AM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN RANSOM...
NORTHWESTERN RICHLAND AND NORTHEASTERN SARGENT COUNTIES UNTIL 630 AM
CDT...

At 531 AM CDT, Doppler radar was tracking a strong thunderstorm near
Milnor, or 42 miles west of Wahpeton, moving north at 20 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Milnor around 545 AM CDT.
  De Lamere around 550 AM CDT.
  McLeod around 625 AM CDT.
  Venlo around 630 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

LAT...LON 4609 9734 4612 9772 4653 9764 4648 9709
TIME...MOT...LOC 1031Z 192DEG 14KT 4621 9749

Speicher

Special weather statement, Aug 9, 5:49 AM CDT, 3 hours 20 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
549 AM CDT Sun Aug 9 2020

MNZ003-024-027>032-091145-
West Becker MN-Wadena MN-East Otter Tail MN-East Becker MN-Clay MN-
Hubbard MN-Wilkin MN-West Otter Tail MN-
549 AM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CLAY...SOUTHWESTERN
HUBBARD...WADENA...NORTHERN OTTER TAIL...NORTHEASTERN WILKIN AND
SOUTHERN BECKER COUNTIES UNTIL 645 AM CDT...

At 549 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Rothsay to near Star Lake to near New York
Mills to near Deer Creek. Movement was north at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
these storms.

Strong thunderstorms will be near...
  Deer Creek, Star Lake and Richville around 550 AM CDT.
  Big McDonald Lake, New York Mills and Dent around 555 AM CDT.
  Wadena around 600 AM CDT.
  Bluffton and Perham around 605 AM CDT.
  Vergas around 610 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

LAT...LON 4637 9498 4637 9516 4620 9515 4640 9552
      4644 9588 4638 9645 4692 9628 4699 9560
      4695 9524 4672 9478 4664 9478
TIME...MOT...LOC 1049Z 199DEG 23KT 4650 9632 4655 9585 4651 9549 4638
9526

Speicher

Special weather statement, Aug 9, 6:57 AM CDT, 2 hours 12 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
657 AM CDT Sun Aug 9 2020

NDZ014-015-091245-
Benson ND-Ramsey ND-
657 AM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BENSON AND CENTRAL RAMSEY
COUNTIES UNTIL 745 AM CDT...

At 656 AM CDT, Doppler radar was tracking a strong thunderstorm near
Brinsmade, or 24 miles west of Devils Lake, moving east at 40 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Brinsmade around 700 AM CDT.
  Minnewaukan around 705 AM CDT.
  Churchs Ferry around 710 AM CDT.
  Penn around 720 AM CDT.
  Lakewood Park around 725 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

LAT...LON 4804 9950 4822 9954 4836 9858 4805 9854
TIME...MOT...LOC 1156Z 261DEG 37KT 4814 9940

Speicher

Special weather statement, Aug 9, 7:10 AM CDT, 1 hour 59 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
710 AM CDT Sun Aug 9 2020

MNZ002-003-091315-
Clay MN-Norman MN-
710 AM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CLAY AND
SOUTHWESTERN NORMAN COUNTIES UNTIL 815 AM CDT...

At 710 AM CDT, Doppler radar was tracking a strong thunderstorm near
Georgetown, or 17 miles northeast of Fargo, moving north at 10 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Hendrum, Felton and Borup.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

LAT...LON 4701 9645 4704 9673 4728 9683 4727 9630
TIME...MOT...LOC 1210Z 183DEG 9KT 4711 9667

CJ

Special weather statement, Aug 9, 8:41 AM CDT, 28 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
841 AM CDT Sun Aug 9 2020

MNZ005-006-009-091445-
North Beltrami MN-Roseau MN-Lake Of The Woods MN-
841 AM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ROSEAU...NORTHERN
BELTRAMI AND SOUTHERN LAKE OF THE WOODS COUNTIES UNTIL 945 AM CDT...

At 841 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Jelle to near Kelliher. Movement was
northeast at 45 mph.

Penny size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Baudette, Lower Red Lake, Ponemah, Upper Red Lake, Waskish, Norris
Camp and Big Bog State Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

If on or near Upper Red Lake, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 4791 9491 4801 9524 4802 9523 4802 9527
      4810 9554 4876 9537 4875 9465 4874 9464
      4872 9459 4872 9456 4870 9454 4869 9445
      4870 9443 4820 9442
TIME...MOT...LOC 1341Z 221DEG 37KT 4820 9534 4799 9441

CJ

Special weather statement, Aug 9, 9:09 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
909 AM CDT Sun Aug 9 2020

MNZ001-007-NDZ016-027-091515-
West Polk MN-West Marshall MN-Eastern Walsh County ND-Grand Forks ND-
909 AM CDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MARSHALL...
NORTHWESTERN POLK...NORTHEASTERN GRAND FORKS AND SOUTHEASTERN WALSH
COUNTIES UNTIL 1015 AM CDT...

At 909 AM CDT, Doppler radar was tracking a strong thunderstorm near
Gilby, or 18 miles northwest of Grand Forks, moving east at 25 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Warren, Alvarado, Manvel, Oslo, Warsaw, Ardoch and Johnstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

LAT...LON 4799 9720 4812 9757 4847 9701 4828 9679
      4805 9668
TIME...MOT...LOC 1409Z 249DEG 22KT 4810 9737

CJ

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 9, 4:36 AM CDT	Special Weather Statement	FGF	Grant, Wilkin	54 min
Aug 9, 4:55 AM CDT	Special Weather Statement	FGF	Otter Tail	65 min
Aug 9, 5:49 AM CDT	Special Weather Statement	FGF	Becker, Wadena	56 min
Aug 9, 7:10 AM CDT	Special Weather Statement	FGF	Norman	65 min
Aug 9, 8:41 AM CDT	Special Weather Statement	FGF	Lake of the Woods	64 min
Aug 9, 12:21 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall	54 min
Aug 9, 1:08 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Roseau	67 min
Aug 9, 1:39 PM CDT	Severe Thunderstorm Warning	FGF	Marshall, Polk	66 min
Aug 9, 2:01 PM CDT	Tornado Warning	FGF	Marshall, Pennington, Polk	44 min
Aug 9, 2:05 PM CDT	Severe Thunderstorm Warning	FGF	Marshall, Pennington, Polk, Red Lake	55 min
Aug 9, 2:10 PM CDT	Severe Thunderstorm Warning	FGF	Norman, Polk, Red Lake	65 min
Aug 9, 2:20 PM CDT	Tornado Warning	FGF	Beltrami, Marshall	40 min
Aug 9, 2:42 PM CDT	Tornado Warning	FGF	Beltrami, Clearwater, Marshall, Pennington, Polk, Red Lake	48 min
Aug 9, 2:49 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Lake of the Woods, Marshall, Roseau	56 min
Aug 9, 2:52 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman	53 min
Aug 9, 2:57 PM CDT	Tornado Warning	FGF	Beltrami, Marshall	33 min
Aug 9, 3:06 PM CDT	Tornado Warning	FGF	Lake of the Woods, Roseau	24 min
Aug 9, 3:12 PM CDT	Severe Thunderstorm Warning	FGF	Polk, Red Lake	63 min
Aug 9, 3:18 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Lake of the Woods, Marshall, Pennington, Polk and 2 more	57 min
Aug 9, 3:20 PM CDT	Severe Thunderstorm Warning	FGF	Clay	22 min
Aug 9, 3:35 PM CDT	Tornado Warning	FGF	Clay, Norman	18 min
Aug 9, 3:41 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Hubbard, Mahnomen, Norman, Polk and 1 more	64 min
Aug 9, 3:47 PM CDT	Tornado Warning	FGF	Lake of the Woods	28 min
Aug 9, 3:53 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Clearwater, Hubbard, Mahnomen, Norman	48 min
Aug 9, 4:38 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Norman and 1 more	52 min
Aug 9, 5:28 PM CDT	Special Weather Statement	FGF	Hubbard	32 min
Aug 9, 5:31 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	29 min
Aug 9, 5:33 PM CDT	Special Weather Statement	FGF	Clearwater	57 min
Aug 9, 4:29 AM CDT	Special Weather Statement	FGF	Richland	61 min
Aug 9, 5:31 AM CDT	Special Weather Statement	FGF	Ransom	59 min
Aug 9, 6:01 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey	59 min
Aug 9, 6:57 AM CDT	Special Weather Statement	FGF	Benson, Ramsey	48 min
Aug 9, 9:51 AM CDT	Special Weather Statement	FGF	Walsh	54 min
Aug 9, 10:12 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson, Ramsey, Walsh	63 min
Aug 9, 10:24 AM CDT	Special Weather Statement	FGF	Cavalier, Towner	66 min
Aug 9, 11:05 AM CDT	Special Weather Statement	FGF	Walsh	55 min
Aug 9, 11:24 AM CDT	Special Weather Statement	FGF	Cavalier, Pembina	66 min
Aug 9, 11:28 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Pembina, Walsh	62 min
Aug 9, 11:42 AM CDT	Tornado Warning	FGF	Cavalier, Pembina, Walsh	36 min
Aug 9, 12:27 PM CDT	Special Weather Statement	FGF	Grand Forks, Nelson, Walsh	63 min
Aug 9, 1:29 PM CDT	Special Weather Statement	FGF	Grand Forks	61 min
Aug 9, 2:14 PM CDT	Tornado Warning	FGF	Barnes, Cass	18 min
Aug 9, 2:25 PM CDT	Tornado Warning	FGF	Cass	30 min
Aug 9, 2:36 PM CDT	Tornado Warning Tornado observed	FGF	Traill	28 min
Aug 9, 3:38 PM CDT	Severe Thunderstorm Warning	FGF	Ransom, Sargent	25 min
Aug 9, 3:55 PM CDT	Severe Thunderstorm Warning	FGF	Sargent	28 min
Aug 9, 4:24 PM CDT	Special Weather Statement	FGF	Sargent	36 min

Nearby

Special Weather Statements in North Dakota, 2020 Every special weather statement in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.